Not everyone wondering about the benefits of black tea is interested in the scientific research that has confirmed the amazing, powerful health benefits of drinking black tea. (If you're one of those, and you'd rather skip the research and just read about the benefits, click here.)
But, for those of you who do like to delve a bit deeper into the research side of things, here is more current research about how this delicious, comforting, aromatic tea is so very good for health and wellness.
Many research studies have shown the benefits of drinking black tea for improved heart health.
For example, an analysis in 2001 of 17 studies about the effect of drinking tea on cardiovascular disease (including stroke and heart attack) concluded that drinking three cups of tea daily can lower the risk of heart attack by 11%.
Another meta-analysis in 2009 reviewing nine studies targeting the relationship between tea consumption and stroke also touted the benefits of black tea. This analysis found that tea drinkers who enjoy three or more cups of black or green tea per day have a 21% lower risk of stroke than people who have less than one cup of tea per day. You can find this research abstract here.
There's more! A recent (2012) study showed that drinking black tea regularly (about three cups daily) supports cardiovascular health by significantly lowering triglyceride levels and improving cholesterol. And, this study confirmed that black tea provides impressive antioxidant support, as well. View the research abstract here.
Black tea can also protect heart health by improving the ability of arteries to expand and relax to allow increased blood flow, according to a 2001 study at Boston University School of Medicine in Boston, Massachusetts.
Both short-term (two hours after drinking black tea) and long-term (about four cups of black tea daily for four weeks) benefits of black tea were studied - and black tea effectively improved artery blood flow in both cases.
The abstract for a study in Perth, Western Australia in 2002 that also shows the benefits of black tea for artery function and health can be found here.
According to a study at University College London (2010), black tea is very effective at lowering cortisol (the 'stress' hormone) levels and helping you de-stress more quickly - especially after a stressful event.
In the study, the male participants drank four cups of black tea daily for six weeks. While drinking black tea didn't reduce their stress levels after a stressful event, the tea did bring their cortisol levels back to normal much more quickly. Faster de-stressing can provide additional protection against other illness - like heart disease.
If you'd like to learn more about black tea's effect on stress, you'll find the research summary for this study here, or read the study abstract here.
Did you miss our other Black Tea Research pages? Visit Black Tea Research page one and page three if you're interested in reading more about what science is discovering about the amazing health and wellness properties of black tea.
From easing stress to protecting heart health to reducing the risk of diabetes, antioxidant-packed black tea, a beloved favorite around the world, is proving to provide myriad physical and mental health benefits. For tea drinkers, this is a healthy bonus added to the satisfying, full-bodied flavor of this much-loved tea.
If you have any questions or concerns about the health effects or benefits of black tea, be sure to schedule a visit to your healthcare provider - she or he would be happy to help!
Arab L, Liu W, Elashoff D. Green and black tea consumption and risk of stroke: a meta-analysis. Stroke. 2009 May;40(5):1786-92.
Arent SM, Senso M, Golem DL and McKeever KH. The effects of theaflavin-enriched black tea extract on muscle soreness, oxidative stress, inflammation, and endocrine responses to acute anaerobic interval training: a randomized, double-blind, crossover study. Journal of the International Society of Sports Nutrition. 2010;7:11
Bahorun T, Luximon-Ramma A, Neergheen-Bhujun VS, Kumar Gunness T, Googoolye K, Auger C, Crozier A, Aruoma OI. The effect of black tea on risk factors of cardiovascular disease in a normal population. Preventive Medicine. 54:S98-S102.
Chen H, Qu Z, Fu L, Dong P. and Zhang X. Physicochemical Properties and Antioxidant Capacity of 3 Polysaccharides from Green Tea, Oolong Tea, and Black Tea. Journal of Food Science. 2009;74: C469–C474.
Duffy SJ, Keaney JF Jr, Holbrook M, Gokce N, Swerdloff PL, Frei B, Vita JA. Short- and long-term black tea consumption reverses endothelial dysfunction in patients with coronary artery disease. Circulation. 2001 Jul 10;104(2):151-6.
Gawlik M, Czajka A. The effect of green, black and white tea on the level of alpha and gamma tocopherols in free radical-induced oxidative damage of human red blood cells. Acta Pol Pharm. 2007 Mar-Apr;64(2):159-64.
Jones C, Woods K, Whittle G, Worthington H, Taylor G. Sugar, drinks, deprivation and dental caries in 14-year-old children in the north west of England in 1995. Community Dent Health. 1999 Jun;16(2):68-71.
Leung LK, Su Y, Chen† R, Zhang Z, Huang Y and Chen Z. Theaflavins in Black Tea and Catechins in Green Tea Are Equally Effective Antioxidants. J. Nutr. 2001 September 1;131(9)2248-2251.
Linke HA, LeGeros RZ. Black tea extract and dental caries formation in hamsters. Int J Food Sci Nutr. 2003 Jan;54(1):89-95.
Panagiotakos DB, Lionis C, Zeimbekis A, et al. Long-Term Tea Intake is Associated with Reduced Prevalence of (Type 2) Diabetes Mellitus among Elderly People from Mediterranean Islands: MEDIS Epidemiological Study. Yonsei Medical Journal. 2009;50(1):31-38.
Peters U, Poole C and Arab L. Does Tea Affect Cardiovascular Disease? A Meta-Analysis. Am. J. Epidemiol. 2001;154 (6):495-503.
Steptoe A, Gibson EL, Vounonvirta R, Williams ED, Hamer M, Rycroft JA, Erusalimsky JD, Wardle J. The effects of tea on psychophysiological stress responsivity and post-stress recovery: a randomised double-blind trial. Psychopharmacology. 2007 January;190(1):81-89.
Wu C, Yang Y, Yao W, Lu F, Wu J, Chang C. Epidemiological Evidence of Increased Bone Mineral Density in Habitual Tea Drinkers. Arch Intern Med. 2002;162(9):1001-1006.